Chair



FIG. 1 is a front elevation of a chair showing my new design;

FIG. 2 is a rear elevation thereof;

FIG. 3 is a left side elevation thereof;

FIG. 4 is a right side elevation thereof;

FIG. 5 is a top plan view thereof;

FIG. 6 is a bottom plan view thereof. 

The ornamental design for a chair, substantially as shown and described. 